Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 26-03-2021 and time 14:15:00 (UTC) in region 3 km SE Arcevia (AN)

A magnitude ML 0.4 earthquake occured in region: 3 km SE Arcevia (AN), on

  • 26-03-2021 14:15:00 (UTC)
  • 26-03-2021 15:15:00 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4760, 12.9580 at 14 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Arcevia AN 3 4612 4612
Genga AN 5 1797 6409
Serra San Quirico AN 6 2850 9259
Mergo AN 7 1037 10296
Rosora AN 9 1985 12281
Sassoferrato AN 9 7285 19566
Serra de' Conti AN 10 3746 23312
Castelplanio AN 10 3540 26852
Montecarotto AN 10 1987 28839
Poggio San Marcello AN 11 693 29532
Barbara AN 13 1368 30900
Maiolati Spontini AN 13 6248 37148
Cupramontana AN 13 4756 41904
Pergola PU 14 6333 48237
San Lorenzo in Campo PU 14 3414 51651
Monte Roberto AN 15 3061 54712
Castelleone di Suasa AN 15 1676 56388
Poggio San Vicino MC 15 246 56634
Serra Sant'Abbondio PU 15 1027 57661
Castelbellino AN 15 4947 62608
Fabriano AN 16 31480 94088
Ostra Vetere AN 16 3311 97399
Apiro MC 17 2280 99679
Cerreto d'Esi AN 17 3817 103496
San Paolo di Jesi AN 18 933 104429
Fratte Rosa PU 18 966 105395
Frontone PU 18 1300 106695
Staffolo AN 19 2253 108948

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km S of Fano (60888 inhabitants)
48 Km W of Ancona (100861 inhabitants)
49 Km S of Pesaro (94582 inhabitants)
61 Km NE of Foligno (57155 inhabitants)
62 Km NE of Perugia (166134 inhabitants)
72 Km SE of Rimini (147750 inhabitants)
87 Km E of Arezzo (99543 inhabitants)
93 Km SE of Cesena (96758 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 0.4 2021-03-26
14:15:00		 43.4763 12.9583 14 2021-03-26
14:22:17		 Sala Sismica INGV-Roma 88493981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-26 14:15:00 ± 0.05
Latitude 43.4763 ± 0.0036
Longitude 12.9583 ± 0.0025
Depth (km) 14 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 88493981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 371
Semi-minor axis of confidence ellipse (meter) 136
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 18
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 149
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.31296
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 88493981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-26 14:22:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.DGI.HHZ. 2021-03-26T14:16:40.91 3.0 undecidable manual Sn -5.79 0
IV.EPOZ.HHZ. 2021-03-26T14:16:35.82 3.0 negative manual Pg 10.51 0
IV.MTGR.HHZ. 2021-03-26T14:16:34.73 3.0 positive manual Pg 15.65 0
IV.CAGR.HHZ. 2021-03-26T14:16:33.03 3.0 undecidable manual Pg 8.78 0
OX.MPRI.HHZ. 2021-03-26T14:16:20.49 3.0 undecidable manual Sn -3.99 0
IV.SPS2.HHZ. 2021-03-26T14:16:19.94 3.0 positive manual Pg 10.22 0
OX.SABO.HNZ. 2021-03-26T14:16:15.58 3.0 undecidable manual Sn -3.51 0
IV.TDS.HHZ. 2021-03-26T14:15:59.72 3.0 undecidable manual Pn -5.71 0
IV.QLNO.HHZ. 2021-03-26T14:15:56.99 3.0 positive manual Pn 2.52 0
OX.MPRI.HHZ. 2021-03-26T14:15:51.41 3.0 negative manual Pg 4.85 0
IV.SEI.HHZ. 2021-03-26T14:15:49.23 3.0 undecidable manual S 2.09 0
IV.CTI.HHZ. 2021-03-26T14:15:41.62 3.0 positive manual Pn -4.63 0
IV.PAOL.HHZ. 2021-03-26T14:15:41.47 3.0 undecidable manual Pg 1.69 0
TV.SF04.EHZ. 2021-03-26T14:15:34.80 3.0 undecidable manual S -3.1 0
GU.GSCL.HHZ. 2021-03-26T14:15:30.54 3.0 negative manual Pn -3.65 0
IV.VIVA.HHZ. 2021-03-26T14:15:27.65 3.0 negative manual P 1.31 0
IV.LRP.EHZ. 2021-03-26T14:15:26.40 3.0 undecidable manual P -1.86 0
IV.PIEI.HHZ. 2021-03-26T14:15:12.16 0.6 undecidable manual S 281 34.743 98 -0.07 48
IV.CING.HNE. 2021-03-26T14:15:08.93 0.6 undecidable manual S 120 22.1556 107 -0.02 49
IV.FRON.EHZ. 2021-03-26T14:15:08.34 0.6 undecidable manual S 284 19.2696 111 0.11 49
IV.EL6.EHZ. 2021-03-26T14:15:08.42 0.3 undecidable manual S 145 19.9689 110 0.02 74
IV.PIEI.HHZ. 2021-03-26T14:15:07.22 0.3 undecidable manual P 281 34.743 98 -0.04 72
IV.ATSC.EHN. 2021-03-26T14:15:05.30 0.1 undecidable manual P 255 22.6551 106 -0.14 96
IV.EL6.EHZ. 2021-03-26T14:15:05.07 0.1 undecidable manual P 145 19.9689 110 0.02 99
IV.ARVD.HHZ. 2021-03-26T14:15:05.06 0.6 undecidable manual S 331 2.7972 166 -0.14 50
IV.MPAG.EHZ. 2021-03-26T14:15:05.54 0.1 undecidable manual P 317 23.2545 105 0 99
IV.CING.HNE. 2021-03-26T14:15:05.33 0.1 undecidable manual P 120 22.1556 107 -0.03 98
IV.FRON.EHZ. 2021-03-26T14:15:05.08 0.1 undecidable manual P 284 19.2696 111 0.13 97
IV.ARVD.HHZ. 2021-03-26T14:15:03.31 0.1 undecidable manual P 331 2.7972 166 0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHE. ML:0.6 0.000053500000000000006 0.38 AML other m 2021-03-26T14:15:05.27
IV.ARVD.HHN. ML:0.5 0.000040400000000000006 0.08 AML other m 2021-03-26T14:15:05.77
IV.FRON.EHE. ML:0.2 0.0000107790715 0.0576 AML other m 2021-03-26T14:15:09.03
IV.FRON.EHN. ML:0.3 0.00001518628395 0.3008 AML other m 2021-03-26T14:15:09.01
IV.PIEI.HHE. ML:0.6 0.000015474265 0.0832 AML other m 2021-03-26T14:15:12.83
IV.PIEI.HHN. ML:0.4 0.00000838027965 0.1024 AML other m 2021-03-26T14:15:12.77
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download